I got into Linux because I used a shitty Acer laptop in middle school and I couldn't stand how slow it was. Somehow I ended up stumbling on some article or video about Linux being faster and installed Ubuntu WUBI (I think that's what it was called, it let you install Ubuntu in Windows). Then I found myself on IRC and became a distrohopper for a few years.
When I was younger I was probably obsessed and proselytized a bit but not so much anymore. An OS is just a tool and people should use what works best for them to solve the problems they have at the time.
But I still daily drive Linux so I guess it's my preferred tool.